The SV-2 model specifies the system resource flows that exist between systems and may also list the protocol stacks used in connections.

The purpose of this model is to define the connectivity requirements between nodes. This model is then used to estimate the requirements for physical routing and bandwidth. An SV-2 model provides a different viewpoint of information already specified in the OV-2, OV-3 and SV-1.

SV-2 is useful when planning physical connections and routings between nodes. It is also intended to assist with the analysis of the connectivity between systems within or between nodes.